نوع مقاله : پژوهشی
نویسندگان
1 دانشجوی کارشناسی ارشد، گروه علوم و مهندسی خاک دانشکده کشاورزی دانشگاه تبریز
2 دانشگاه تبریز
3 گروه علوم و مهندسی خاک، دانشکده کشاورزی، دانشگاه تبریز، تبریز، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
In this research, the effects of combined application of biochar pyrolysed at 300 ˚C and phosphorous (P) fertilizer on some agronomical and morphological triats of rapeseed (Brassica napus L.) Hyola 308 cultivar and water use efficiency were studied in an alkaline loam soil. A factorial experiment was done in a completely randomized design with three replicates. The factors were organic matter at two sources (biochar and wheat straw) and three levels (0, 20, and 40 g kg-1) and phosphorus at three levels (0, 20, and 40 mg kg-1 as triple superphosphate fertilizer). Before the plants harvesting, leaf chlorophyll index and leaf area were measured. After the plant was harvested, shoot, root, and seed dry matters, water use efficiency, plant height, stem diameter, root volume, number of pods, thousand seed weight, seed oil content, seed protein percentage and seed protein content were measured. The results showed that the application of biochar at both levels of two and four percent, and phosphorus significantly increased leaf chlorophyll index, stem height, shoot, root, and seed dry matters, number of pods, thousand seed weight, water use efficiency, protein, and seed oil content compared to the control, but the application of wheat straw led to a decrease in these characteristics except water use efficiency. Using biochar obtained from wheat straw pyrolyzed at 300 ◦C in an alkaline loam soil compared to initial biomass improved the agronomical and morphological triats of rapeseed (Brassica napus L.) in an alkaline loam soil.
کلیدواژهها [English]
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